TSB Document:

• MC-10203548-9999.pdf

Affected Component: EQUIPMENT:ELECTRICAL

Summary

TSB: Some 2020 model year ES 350, ES 300h, UX 200, and UX 250h vehicles may exhibit one or more of the following conditions: ?Diagnostic Trouble Code (DTC) B15A804 is present in current or history. ?Red SOS LED stays on after bulb check. ?Lexus App does not accept the activation code. ?Lexus App is inoperative. ?SOS call center does not receive the vehicle?s location in a timely manner. ?Lexus App shows an error 42 when trying to execute a command. ?Unable to remote start the vehicle with the key fob (if equipped). ?Unable to subscribe to remote services. ?Unable to activate Wi-Fi. ?Destination Assist is inoperative. Some 2020 ? 2021 model year ES 350, ES 300h, UX 200, and UX 250h vehicles may exhibit one or more of the following conditions: ?DTC B15A804 is present in current or history. ?Red SOS LED stays on after bulb check. ?Lexus App is inoperative. ?Unable to subscribe to remote services. ?Unable to activate Wi-Fi. ?Depleted 12V vehicle battery when in IG-OFF. Some 2020 ? 2021 model year ES 350, ES 300h, UX 200, and UX 250h and 2021 model year ES 250 vehicles may exhibit one or more of the following conditions: ?Depleted 12V vehicle battery when in IG-OFF. ?Unable to reconnect out of network. A DCM reset and firmware update is now available to address these conditions. Follow the DCM Reset and Firmware Update Procedure in this bulletin to update the firmware.

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